Cargando…
The Effect of Lithium Ion Leaching from Calcined Li–Al Hydrotalcite on the Rapid Removal of Ni(2+)/Cu(2+) from Contaminated Aqueous Solutions
A layered double hydroxide (LDH) calcined-framework adsorbent was investigated for the rapid removal of heavy metal cations from plating wastewater. Li–Al–CO(3) LDH was synthesized on an aluminum lathe waste frame surface to prepare the sorbent. The calcination treatment modified the LDH surface pro...
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180396/ https://www.ncbi.nlm.nih.gov/pubmed/37177022 http://dx.doi.org/10.3390/nano13091477 |
_version_ | 1785041325083590656 |
---|---|
author | Chen, Yu-Jia Uan, Jun-Yen |
author_facet | Chen, Yu-Jia Uan, Jun-Yen |
author_sort | Chen, Yu-Jia |
collection | PubMed |
description | A layered double hydroxide (LDH) calcined-framework adsorbent was investigated for the rapid removal of heavy metal cations from plating wastewater. Li–Al–CO(3) LDH was synthesized on an aluminum lathe waste frame surface to prepare the sorbent. The calcination treatment modified the LDH surface properties, such as the hydrophilicity and the surface pH. The change in surface functional groups and the leaching of lithium ions affected the surface properties and the adsorption capacity of the heavy metal cations. A zeta potential analysis confirmed that the 400 °C calcination changed the LDH surface from positively charged (+10 mV) to negatively charged (−17 mV). This negatively charged surface contributed to the sorbent instantly bonding with heavy metal cations in large quantities, as occurs during contact with wastewater. The adsorption isotherms could be fitted using the Freundlich model. The pseudo-second-order model and the rate-controlled liquid-film diffusion model successfully simulated the adsorption kinetics, suggesting that the critical adsorption step was a heterogeneous surface reaction. This study also confirmed that the recovered nickel and/or copper species could be converted into supported metal nanoparticles with a high-temperature hydrogen reduction treatment, which could be reused as catalysts. |
format | Online Article Text |
id | pubmed-10180396 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-101803962023-05-13 The Effect of Lithium Ion Leaching from Calcined Li–Al Hydrotalcite on the Rapid Removal of Ni(2+)/Cu(2+) from Contaminated Aqueous Solutions Chen, Yu-Jia Uan, Jun-Yen Nanomaterials (Basel) Article A layered double hydroxide (LDH) calcined-framework adsorbent was investigated for the rapid removal of heavy metal cations from plating wastewater. Li–Al–CO(3) LDH was synthesized on an aluminum lathe waste frame surface to prepare the sorbent. The calcination treatment modified the LDH surface properties, such as the hydrophilicity and the surface pH. The change in surface functional groups and the leaching of lithium ions affected the surface properties and the adsorption capacity of the heavy metal cations. A zeta potential analysis confirmed that the 400 °C calcination changed the LDH surface from positively charged (+10 mV) to negatively charged (−17 mV). This negatively charged surface contributed to the sorbent instantly bonding with heavy metal cations in large quantities, as occurs during contact with wastewater. The adsorption isotherms could be fitted using the Freundlich model. The pseudo-second-order model and the rate-controlled liquid-film diffusion model successfully simulated the adsorption kinetics, suggesting that the critical adsorption step was a heterogeneous surface reaction. This study also confirmed that the recovered nickel and/or copper species could be converted into supported metal nanoparticles with a high-temperature hydrogen reduction treatment, which could be reused as catalysts. MDPI 2023-04-26 /pmc/articles/PMC10180396/ /pubmed/37177022 http://dx.doi.org/10.3390/nano13091477 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Chen, Yu-Jia Uan, Jun-Yen The Effect of Lithium Ion Leaching from Calcined Li–Al Hydrotalcite on the Rapid Removal of Ni(2+)/Cu(2+) from Contaminated Aqueous Solutions |
title | The Effect of Lithium Ion Leaching from Calcined Li–Al Hydrotalcite on the Rapid Removal of Ni(2+)/Cu(2+) from Contaminated Aqueous Solutions |
title_full | The Effect of Lithium Ion Leaching from Calcined Li–Al Hydrotalcite on the Rapid Removal of Ni(2+)/Cu(2+) from Contaminated Aqueous Solutions |
title_fullStr | The Effect of Lithium Ion Leaching from Calcined Li–Al Hydrotalcite on the Rapid Removal of Ni(2+)/Cu(2+) from Contaminated Aqueous Solutions |
title_full_unstemmed | The Effect of Lithium Ion Leaching from Calcined Li–Al Hydrotalcite on the Rapid Removal of Ni(2+)/Cu(2+) from Contaminated Aqueous Solutions |
title_short | The Effect of Lithium Ion Leaching from Calcined Li–Al Hydrotalcite on the Rapid Removal of Ni(2+)/Cu(2+) from Contaminated Aqueous Solutions |
title_sort | effect of lithium ion leaching from calcined li–al hydrotalcite on the rapid removal of ni(2+)/cu(2+) from contaminated aqueous solutions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180396/ https://www.ncbi.nlm.nih.gov/pubmed/37177022 http://dx.doi.org/10.3390/nano13091477 |
work_keys_str_mv | AT chenyujia theeffectoflithiumionleachingfromcalcinedlialhydrotalciteontherapidremovalofni2cu2fromcontaminatedaqueoussolutions AT uanjunyen theeffectoflithiumionleachingfromcalcinedlialhydrotalciteontherapidremovalofni2cu2fromcontaminatedaqueoussolutions AT chenyujia effectoflithiumionleachingfromcalcinedlialhydrotalciteontherapidremovalofni2cu2fromcontaminatedaqueoussolutions AT uanjunyen effectoflithiumionleachingfromcalcinedlialhydrotalciteontherapidremovalofni2cu2fromcontaminatedaqueoussolutions |